An aberrant independent origin of the serratus anterior pedicle.

We present an anomaly of the subscapular vascular tree that has not been previously reported. The serratus anterior pedicle originated directly from the subscapular vessels from the proximal third of the axillary artery. The thoracodorsal vessels arose separately, directly from the distal third of the axillary vessels. This vascular pattern was not encountered in any previous patient in our series of serratus anterior muscle transfers.